36results about How to "Reduce tissue" patented technology

The invention relates to the field of aluminum alloy material manufacturing, in particular to a method for producing an aluminum strip for a power battery shell through a cast-rolling method. The method comprises the specific steps that raw material matching is carried out according to alloy components; after raw materials are molten, an additive is added to adjust the components; after being molten, the raw materials are guided into a standing furnace; after being subjected to online degassing and filtering, treated molten aluminum is subjected to cast-rolling; two times of modification treatment are carried out in a launder between a degassing box and the standing furnace and a launder between a filtering box and a cast-rolling machine; a produced cast-rolled plate blank is subjected to certain rolling, then subjected to inner ring and outer ring welding and then annealed at the thickness ranging from 4.0 mm to 9.0 mm; and an aluminum coil of the finished product thickness is subjected to secondary heat treatment and then subjected to slitting machining and is slit to the target width. The method is different from traditional hot rolling method production, the cast-rolling method is adopted for production, and cost reducing and period shortening are achieved.

The invention provides a tungsten-nickel alloy and a preparation method thereof. The tungsten-nickel alloy comprises, by mass, 20-80% of W, 80-20% of Ni, 0-3 % of Ti, 0-4% of Al, 0-10% of Nb and 0-12%of Ta. The preparation method sequentially comprises the following steps of air atomization spraying, powder preparation, hot isostatic pressing and heat treatment. The preparation method of the tungsten-nickel alloy has the advantages that the prepared tungsten-nickel alloy is uniform in structure and short in technological process, complex shapes can be manufactured, raw materials can be saved,the tensile strength of the materials can reach 1000-2100 MPa, the yield strength is 500-1500 MPa, and the elongation rate is 15-60%. The tungsten-nickel alloy prepared by the method is suitable forthe fields such as high-energy ray shielding protection and high-speed kinetic energy weapon, and has good economic and social benefits.

The invention provides a precise forging-continuous rolling production technology of a large and heavy single molybdenum rod. The production technology comprises the following steps of: 1, carrying out billet forging on the molybdenum rod by a precision forging machine to obtain a precision forging bar; 2, heating the precision forging bar; 3, rolling for the first time by a Y-shaped three-roller continuous mill to obtain a rolled molybdenum rod; 4, heating the rolled molybdenum rod; and 5, rolling for the second time by the Y-shaped three-roller continuous mill and obtaining the large and heavy single molybdenum rod of which the piece weight is 45-50kg. Deep processing of a molybdenum bar is successfully achieved by setting and optimizing each parameter in precision forging, thermal treatment and continuous rolling processes; the large and heavy single molybdenum rod, which is suitable for subsequent wire drawing, and of which the piece weight is 45-50kg, is finally produced; and the production efficiency is obviously improved. The piece weight of the molybdenum rod produced by the production technology is much greater than that of the molybdenum rod produced by a traditional technology; and the precise forging-continuous rolling production technology has no welding spot on the whole, and is even in internal organization, high in product quality and suitable for large-scale industrial production.

This invention relates to a contactor material of a high voltage vacuum arc-suppressing chamber in a vacuum switch, its weight percentage composition is: Mo18-22%, W3-7%, Cr3-7%, the rest is Cu. The Mo, W, Cr powder materials mixed uniformly in terms of the composition ratio are prepared by penetrating Cu with high temperature penetration method. This invented contactor material has super low oxygen content, uniform organization, good performance of arc suppression.